Okay, this has gotten really weird, I went into task manager and turned off the System Restore (SR) task which was running at that time. This seemed to work until I reached up and turned off the desk lamp, it disconnected. Turned on lamp, turned off lamp, disconnect again. Didn't do it a third time. This morning it did it again when I cycled the lamp. Looks like I should put a filter on the lamp or the computer.